使用Java进行128位数据加密

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class AES128Encryption {
    private static final String ALGORITHM = "AES";
    private static final String TRANSFORMATION = "AES/ECB/PKCS5Padding";

    public static void main(String[] args) {
        String data = "Hello, world!";
        String key = "1234567890123456";

        try {
            byte[] encryptedData = encrypt(data.getBytes(StandardCharsets.UTF_8), key);
            String encryptedDataBase64 = Base64.getEncoder().encodeToString(encryptedData);
            System.out.println("Encrypted data: " + encryptedDataBase64);

            byte[] decryptedData = decrypt(Base64.getDecoder().decode(encryptedDataBase64), key);
            System.out.println("Decrypted data: " + new String(decryptedData, StandardCharsets.UTF_8));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static byte[] encrypt(byte[] data, String key) throws Exception {
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), ALGORITHM);
        Cipher cipher = Cipher.getInstance(TRANSFORMATION);
        cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
        return cipher.doFinal(data);
    }

    public static byte[] decrypt(byte[] encryptedData, String key) throws Exception {
        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), ALGORITHM);
        Cipher cipher = Cipher.getInstance(TRANSFORMATION);
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
        return cipher.doFinal(encryptedData);
    }
}